Gerwyn Price has withdrawn from Thursday's Premier League night at The Brighton Centre with an injured hand, which he says has "nothing to do with his charity boxing training".
The Welshman informed the PDC of his decision at 1600 GMT on Thursday, having travelled to Brighton on Wednesday and attempted to practise ahead of his scheduled match with Joe Cullen.
Following the withdrawal, under the rules of the tournament Cullen is awarded a 6-0 win in the quarter-finals, and progresses into the semi-finals to play either Michael van Gerwen or James Wade.
Price has also withdrawn from the weekend's German Darts Championship in Hildesheim, which begins on Friday.
The world No 2, who only started playing pro events in 2015 after a rugby career with Neath RFC, Cross Keys, and then Pro 12 side Glasgow Warriors, recently announced he will be making his boxing debut in Wales this April.
Price will take on Rhys 'Cool Fly & Flashy' Evans in a charity event at the Valley Tavern in Fleur De Lys on April 9.
But the former world champion took to Twitter to explain his injury had nothing to do with his upcoming bout.
He said: "I apologise to everyone this wasn't the easiest decision I have done everything I can to get my injury right before I play but unfortunately a few days rest for me, just to clarify that my injury was an accident and nothing to do with my charity boxing training."
Premier League
Night 5 - The Brighton Centre
Revised Schedule
Quarter-Finals
Gary Anderson vs Michael Smith
Peter Wright vs Jonny Clayton
Michael van Gerwen vs James Wade
Joe Cullen bye (Gerwyn Price withdrawn)
Semi-Finals
Anderson/Smith vs Wright/Clayton
Van Gerwen/Wade vs Joe Cullen